EP2146153B1 - Steuerverfahren einer Klimaanlage - Google Patents

Steuerverfahren einer Klimaanlage Download PDF

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Publication number
EP2146153B1
EP2146153B1 EP09158411.0A EP09158411A EP2146153B1 EP 2146153 B1 EP2146153 B1 EP 2146153B1 EP 09158411 A EP09158411 A EP 09158411A EP 2146153 B1 EP2146153 B1 EP 2146153B1
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EP
European Patent Office
Prior art keywords
discomfort index
air conditioning
conditioning space
temperature
target
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP09158411.0A
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English (en)
French (fr)
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EP2146153A3 (de
EP2146153A2 (de
Inventor
Sung Goo Kim
Kyung Rae Cho
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Filing date
Publication date
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Publication of EP2146153A2 publication Critical patent/EP2146153A2/de
Publication of EP2146153A3 publication Critical patent/EP2146153A3/de
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Publication of EP2146153B1 publication Critical patent/EP2146153B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/029—Control issues
    • F25B2313/0293—Control issues related to the indoor fan, e.g. controlling speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation

Definitions

  • the present invention relates to a control method of an air conditioner, and, more particularly, to a control method of an air conditioner that is capable of performing a cooling operation such that the discomfort index reaches a target discomfort index.
  • Japanese patent document JPH11108418A discloses an air conditioning controller in an air conditioning system which calculates a discomfort index based on data from a temperature sensor and a moisture sensor in a room and the calculated discomfort index is corrected based on data from a wind volume sensor, a wind pressure sensor and a wind velocity sensor in the chamber to calculate the degree of discomfort allowed for effect by an air current.
  • US patent document US5170935A discloses a system for providing adaptable control of an HVAC system which regulates environmental conditions within an enclosed area.
  • the discomfort index is a function having temperature and humidity as variables, and therefore, the discomfort index is decided by the temperature and the humidity. Consequently, temperature may vary although the discomfort index is the same. For example, the discomfort index when the humidity is high and the temperature is low may be the same as the discomfort index when the humidity is low and the temperature is high, although the temperature varies.
  • the temperature may vary although the discomfort index is the same, and therefore, when the temperature of the air conditioning space is low, the difference between the temperature of the air conditioning space and the skin temperature of people increases, with the result that people feel cold.
  • the cooling operation is controlled to maintain the target discomfort index based on only the discomfort index of the air conditioning space not considering the difference between the temperature of the air conditioning space and the skin temperature of people as in the conventional art, the cooling operation is continuously performed, although a user feels cold, with the result that energy is wasted.
  • the present invention provides a control method of an air conditioner, including performing a cooling operation until a discomfort index of an air conditioning space reaches a target discomfort index, confirming a temperature band of the air conditioning space when the discomfort index has reached the target discomfort index, and adjusting the target discomfort index according to the temperature band of the air conditioning space to control the cooling operation.
  • the temperature band of the air conditioning space is a low temperature region having a first temperature range, an intermediate temperature region having a second temperature range, or a high temperature region having a third temperature range.
  • the target discomfort index is upward adjusted within a range not to affect the comfort of people at the low temperature region and the intermediate temperature region. Also, the target discomfort index is upward adjusted with a larger value at the low temperature region than at the intermediate temperature region.
  • the adjusting the target discomfort index according to the temperature band of the air conditioning space to control the cooling operation includes stopping a compressor and an indoor fan when the temperature band of the air conditioning space is the low temperature region and the discomfort index of the air conditioning space is below the adjusted target discomfort index.
  • the adjusting the target discomfort index according to the temperature band of the air conditioning space to control the cooling operation includes stopping a compressor and controlling an indoor fan to be driven according to a humidity of the air conditioning space when the temperature band of the air conditioning space is the intermediate temperature region and the discomfort index of the air conditioning space is below the adjusted target discomfort index.
  • the indoor fan is stopped when the humidity of the air conditioning space is 50 % or more at the time of stopping the compressor, and is driven when the humidity of the air conditioning space is below 50 % at the time of stopping the compressor.
  • the adjusting the target discomfort index according to the temperature band of the air conditioning space to control the cooling operation includes maintaining the discomfort index of the air conditioning space when the temperature band of the air conditioning space is the high temperature region and stopping a compressor and driving an indoor fan when the discomfort index of the air conditioning space is below the target discomfort index.
  • the present invention provides a control method of an air conditioner, including performing a cooling operation until a discomfort index of an air conditioning space reaches a target discomfort index, adjusting the target discomfort index based on a temperature of the air conditioning space when the discomfort index has reached the target discomfort index, and controlling the cooling operation based on the adjusted target discomfort index.
  • the adjusted target discomfort index is the maximum discomfort index that can be upward adjusted within a range not to affect the comfort of people in correspondence to the temperature of the air conditioning space.
  • the adjusted target discomfort index is upward adjusted such that target discomfort index rises as much as the temperature of the air conditioning space lowers.
  • the controlling the cooling operation includes stopping a compressor when the discomfort index of the air conditioning space is below the adjusted target discomfort index and controlling an indoor fan to be driven according to a humidity of the air conditioning space at the time of stopping the compressor.
  • the controlling the cooling operation includes stopping the indoor fan when the humidity of the air conditioning space at the time of stopping the compressor is higher than a predetermined humidity and driving the indoor fan when the humidity of the air conditioning space at the time of stopping the compressor is lower than the predetermined humidity.
  • the controlling the cooling operation includes stopping a compressor when the discomfort index of the air conditioning space is below the adjusted target discomfort index and controlling an indoor fan to be driven according to the temperature of the air conditioning space at the time of stopping the compressor.
  • the controlling the cooling operation includes stopping the indoor fan when the temperature of the air conditioning space when the discomfort index of the air conditioning space reaches the target discomfort index is below a predetermined temperature and driving the indoor fan when the temperature of the air conditioning space when the discomfort index of the air conditioning space reaches the target discomfort index exceeds the predetermined temperature.
  • an indoor unit of an air conditioner includes a box-type main body 10 open at the front thereof.
  • each side of the main body 10 is formed a side suction port 11 to suction indoor air.
  • each side of the main body 10 At a region adjacent to an indoor heat exchanger 12, is formed a side discharge port 14 to discharge conditioned air, blown by an indoor fan 13, into the room such that the side discharge port 14 extends vertically with a predetermined length.
  • a front discharge port 15 At the front of the main body 10 is horizontally formed a front discharge port 15.
  • louvers 16 and 17 are hingedly mounted in the discharge ports 14 and 15, respectively, such that the discharge ports 14 and 15 can be opened or closed, or the discharge directions can be adjusted, by adjusting the hinged angles of the louvers 16 and 17.
  • the indoor heat exchanger 12 is mounted in the upper part of the main body 10, to perform heat exchange with indoor air.
  • the indoor heat exchanger 12 is mounted inside the upper space of the main body 10 at a predetermined inclination such that the air is heat-exchanged by the indoor heat exchanger 12 while passing through the indoor heat exchanger 12.
  • the indoor fan 13 is mounted in the lower part of the main body 10, at a region corresponding to the side suction ports 11, to blow cool air, heat-exchanged by the indoor heat exchanger 12, into the room.
  • the indoor fan 13 is operated such that air suctioned into the main body 10 through the side suction ports 11 of the main body 10 can flow to the side discharge ports 14 of the main body 10 via the indoor heat exchanger 12.
  • indoor air is suctioned through the side suction ports 11 and is blown to the indoor heat exchanger 12 by the indoor fan 13.
  • the indoor heat exchanger 12 exchanges heat with the blown indoor air to absorb heat from the indoor air and thus produce cool air.
  • the cool air is discharged through the side discharge ports 14 and/or the front discharge port 15 to cool the room.
  • the air conditioner including the above-described indoor unit, according to the embodiment of the present invention is constructed in a structure in which a compressor 20 to compress a refrigerant, an outdoor heat exchanger 21 configured to function as a condenser to condense the refrigerant, an electric expansion valve 22 to expand the refrigerant into low temperature and low pressure, and the indoor heat exchanger 12 configured to function as an evaporator to evaporate the refrigerant are connected to one another by a refrigerant pipe to constitute a closed circuit.
  • the room-temperature and high-pressure liquid refrigerant passes through the electric expansion valve 22, by which the refrigerant is changed into a low-temperature and low-pressure liquid refrigerant.
  • the low-temperature and low-pressure liquid refrigerant passes through the indoor heat exchanger 12.
  • the compressor applied to the embodiment of the present invention may be a fixed-capacity compressor of which the compression capacity is fixed or a variable-capacity compressor of which the compression capacity is variable.
  • the compressor applied to the embodiment of the present invention may include one or more fixed-capacity compressors or one or more variable-capacity compressors.
  • the compressor applied to the embodiment of the present invention may be constructed in a structure having both the fixed-capacity compressor and the variable-capacity compressor.
  • the variable-capacity compressor includes a variable rotational frequency compressor and a pulse width modulation compressor.
  • the variable rotational frequency compressor changes the frequency of electric current supplied to the compressor, through the control of an inverter, to control the rotational frequency of a motor and thus vary the compression capacity of the compressor.
  • the capacity of the pulse width modulation compressor is varied according to a duty control signal deciding loading time to discharge the refrigerant and unloading time not to discharge the refrigerant.
  • the air conditioner with the above-described construction according to the embodiment of the present invention includes a controller 30 to perform an overall control operation.
  • a temperature detection unit 32 To the input side of the controller 30 are electrically connected an input unit 31, a temperature detection unit 32, and a humidity detection unit 33. To the output side of the controller 30 is electrically connected a compressor drive unit 34. Also, a storage unit 35 is electrically connected to the input and output side of the controller 30.
  • the input unit 31 includes operation modes (automatic, cooling, dehumidification, and comfort) of the air conditioner and a plurality of function keys.
  • the input unit 31 further includes a start/stop key to allow a user to input an operation start signal and an operation stop signal of the air conditioner.
  • the controller 30 is a microprocessor to control the overall operation of the air conditioner according to an operation signal inputted by the input unit 31.
  • the controller 30 controls a cooling operation by performing the cooling operation, calculating the discomfort index of an air conditioning space from the temperature and humidity of the air conditioning space, recognizing the temperature of the air conditioning space when the calculated discomfort index reaches a target discomfort index, and adjusting the target discomfort index based on the recognized temperature of the air conditioning space.
  • the temperature detection unit 32 is mounted in a space defined between the side suction ports 11 of the main body 10 and the indoor heat exchanger 12.
  • the temperature detection unit 32 detects the temperate of air suctioned through the side suction ports 11 and outputs the detected temperature of the air to the controller 30.
  • the humidity detection unit 33 is mounted in a space defined between the side suction ports 11 of the main body 10 and the indoor heat exchanger 12.
  • the humidity detection unit 33 detects the humidity of air suctioned through the side suction ports 11 and outputs the detected humidity of the air to the controller 30.
  • the compressor drive unit 34 receives a control signal outputted from the controller 30 to control the compressor 20 on or off depending upon the determination as to whether the discomfort index, calculated from the temperature of the air conditioning space detected by the temperature detection unit 32 and the humidity of the air conditioning space detected by the humidity detection unit 33 during the cooling operation, has reached the target discomfort index.
  • the storage unit 35 stores discomfort indices corresponding to temperatures or temperature bands of the air conditioning space when the discomfort index reaches the target discomfort index to prevent the execution of an unnecessary cooling operation within a range not to affect the comfort of a user and thus reduce power consumption.
  • the air conditioner according to the embodiment of the present invention further includes a display unit 36 to display the state of the cooling operation and the discomfort index of the air conditioning space, and a wind direction control unit 37 and an indoor fan drive unit 38 configured to operate during the cooling operation, which are electrically connected to the output side of the controller 30.
  • the display unit 36 displays the state of the cooling operation and the discomfort index of the air conditioning space when a user inputs the cooling operation through the input unit 31.
  • the wind direction control unit 37 controls the louvers 16 and 17 to be driven such that air discharged through the side discharge ports 14 and the front discharge port 15 is directed upward and downward or left and right, and therefore, the air uniformly spreads throughout the air conditioning space.
  • the indoor fan drive unit 38 controls the indoor fan 13 to be driven by receiving a control signal outputted from the controller 30 according to the amount of wind set by the user through the input unit 31 and controlling the rotational frequency of the indoor fan 13 such that air heat-exchanged by the indoor heat exchanger 12 is blown into the room.
  • the velocity of the indoor fan 13 is variable.
  • the indoor fan drive unit 38 controls the rotational frequency of the indoor fan 13, according to a signal from the controller 30, to provide various winds, such as a turbo wind having the maximum amount of wind, a low wind, etc.
  • the controller 30 opens the discharge ports 14 and 15 through the wind direction control unit 37 and drives the compressor 20 to cool the air conditioning space through a cooling cycle.
  • the discomfort index of the air conditioning space is calculated from the temperature and humidity of the air conditioning space respectively detected by the temperature detection unit 32 and the humidity detection unit 33 during the cooling of the air conditioning space.
  • the target discomfort index is upwardly adjusted to be a discomfort index previously set according to the temperature or temperature band of the air conditioning space when the calculated discomfort index reaches the target discomfort index, or the target discomfort index is maintained unchanged. Consequently, when the temperature or temperature band of the air conditioning space when the discomfort index reaches the target discomfort index is a level in which the skin temperature of people is lowered or maintained when people are in a space having the same temperature and humidity for a long time in summer, the target discomfort index is increased to perform a relatively low cooling operation and thus reduce unnecessary power consumption.
  • DI 9 / 5 Tr ⁇ 0.55 1 ⁇ Hr 9 / 5 Tr ⁇ 26 + 32
  • Tr (°C) is dry-bulb temperature
  • Hr (%) is relative humidity.
  • the dry-bulb temperature is detected by the temperature detection unit 32
  • the relative humidity is detected by the humidity detection unit 33. It is known that, when the discomfort index is more than 85, most people feel uncomfortable, and, when the discomfort index is less than 70, most people do not feel uncomfortable.
  • FIG. 4 is a conceptional view illustrating the adjustment of a target discomfort index according to the temperature of an air conditioning space when the discomfort index reaches the target discomfort index in the air conditioner according to the embodiment of the present invention.
  • FIG. 5 is a conceptional view illustrating the upward adjustment of the target discomfort index DI_3 to a new target discomfort index DI_1 in FIG. 4 .
  • the target discomfort index is defined to be set to DI_3 at the beginning of a cooling operation.
  • the discomfort index of the air conditioning space gradually lowers, during the cooling operation, with the result that the discomfort index of the air conditioning space reaches the target discomfort index DI_3, which means that a point P0 on the discomfort index of the air conditioning space at the beginning of the cooling operation moves to another point P1, P2, or P3 on the target discomfort index DI_3 by the cooling operation.
  • the discomfort index is a function having temperature and humidity as variables, and therefore, the discomfort index is decided by the temperature and the humidity. Consequently, temperature may vary although the discomfort index is the same.
  • the points P1, P2, and P3 have different temperatures and humidities although the points have the same discomfort index.
  • the point P1 has a temperature of T1 and a humidity of H1.
  • the point P2 has a temperature of T2 higher than T1 and a humidity of H2 lower than H1.
  • the point P3 has a temperature of T3 higher than T2 and a humidity of H3 lower than H2.
  • the target discomfort index DI_3 is upward adjusted to a new target discomfort index DI_1 such that the point P1 on the target discomfort index DI_3 moves to a point P1', having a higher temperature T1', on the new target discomfort index.
  • the target discomfort index is upward adjusted such that target discomfort index rises as much as the temperature of the point P1 lowers.
  • the compressor is stopped until the discomfort index of the air conditioning space reaches the upward adjusted target discomfort index DI_1, thereby reducing power consumption.
  • the compressor 20 is driven with the beginning of an operation at Operation 100.
  • the compressor 20 includes a plurality of compressors, all the compressors are driven such that the air conditioner is operated with the maximum capacity.
  • the compressor 20 is a variable capacity compressor, the compressor is driven with the maximum power.
  • the indoor fan 13 is driven at a turbo wind mode providing the maximum amount of wind to rapidly cool the air conditioning space.
  • the temperature and humidity of the air conditioning space are detected at Operations 110 and 120, respectively, and the discomfort index of the air conditioning space is calculated at Operation 130. At this time, the discomfort index of the air conditioning space is calculated by the previously-described equation [1].
  • the discomfort index of the air conditioning space is calculated, it is determined at Operation 140 whether the discomfort index DI of the air conditioning space has reached a target discomfort index DI_ref (for example, 70). When it is determined at Operation 140 that the discomfort index DI of the air conditioning space has not reached the target discomfort index DI_ref, the procedure returns to Operation 100, and subsequent operations are performed.
  • a target discomfort index DI_ref for example, 70
  • the compressor 20 is stopped at Operation 150, and the temperature of the air conditioning space when the discomfort index DI of the air conditioning space has reached the target discomfort index DI_ref is confirmed at Operation 160.
  • the temperature of the air conditioning space is detected by the temperature detection unit 32 or confirmed through the recognition of the temperature when the discomfort index DI of the air conditioning space has reached the target discomfort index DI_ref.
  • the temperature band of the air conditioning space is a first temperature band T ⁇ T1 (for example, T1 is 24 °C), and the target discomfort index is upward adjusted from D_ref (for example, 70) to DI_1 (for example, 74) at Operation 180.
  • the first temperature band T ⁇ T1 is a low temperature region at which the skin temperature of people goes down below the optimum temperature, 33 to 34 °C, when people are in the air conditioning space for a long time in summer.
  • the second temperature band T1 ⁇ T ⁇ T2 is an intermediate temperature region at which the skin temperature of people goes down below the optimum temperature, 33 to 34 °C, but is higher than the first temperature band T ⁇ T1 when people are in the air conditioning space for a long time in summer.
  • the temperature band of the air conditioning space is a third temperature band T>T2, and the target discomfort index is upward adjusted from D_ref (for example, 70) to DI_3 (for example, 70) at Operation 300.
  • the third temperature band T>T2 (for example, T2 is 26 °C) is a high temperature region at which the skin temperature of people is between or higher than 33 to 34 °C when people are in the air conditioning space for a long time in summer.
  • the target discomfort index DI_ref and the adjusted target discomfort index DI_3 may be the same. In this case, the existing target discomfort index is maintained.
  • the target discomfort index is upward adjusted from D_ref to DI_1
  • the temperature and humidity of the air conditioning space are detected at Operation 181
  • the discomfort index of the air conditioning space is calculated at Operation 182.
  • the compressor 20 is stopped at Operation 184.
  • the compressor remains stopped until the discomfort index DI of the air conditioning space reaches the adjusted target discomfort index DI_1, thereby reducing power consumption.
  • the indoor fan 13 is stopped, at Operation 185, with the stoppage of the compressor 20. Since the humidity of the air conditioning space is high at the low temperature region when the compressor is stopped, both the indoor fan 13 and the compressor 20 are stopped to prevent humidification in the air conditioning space during the stoppage of the compressor 20.
  • the compressor 20 is driven at Operation 186, and the indoor fan 13 is driven to provide a low wind at Operation 187.
  • the compressor 20 is driven with normal power, not with the maximum power. This is because the discomfort index approaches the newly changed target discomfort index, and therefore, it is advantageous to prevent the compressor and the indoor fan from being frequently turned on/off by weakly driving the compressor and the indoor fan such that the discomfort index reaches the target discomfort index rather than by maximally driving the compressor and the indoor fan such that the discomfort index reaches the target discomfort index.
  • the target discomfort index is upward adjusted from D_ref to DI_2, the temperature and humidity of the air conditioning space are detected at Operation 111, and the discomfort index of the air conditioning space is calculated at Operation 192.
  • the discomfort index of the air conditioning space is calculated, it is determined at Operation 193 whether the discomfort index DI of the air conditioning space is equal to or less than the adjusted target discomfort index DI_2.
  • the humidity of the air conditioning space is below a predetermined humidity H_ref (for example, 50 %).
  • the compressor 20 is stopped at Operation 197, and the indoor fan 13 is driven to provide a low wind at Operation 198.
  • the reason to drive the indoor fan 13 such that the low wind is provided by the indoor fan 13 is that it is necessary to humidify the air conditioning space, such that the air conditioning space is not in an excessively dry state, since the humidity of the air conditioning space is relatively low when the compressor is stopped.
  • the compressor 20 is driven at Operation 199, and the indoor fan 13 is driven to provide a low wind at Operation 200. At this time, the compressor 20 is driven with normal power, not with the maximum power.
  • the target discomfort index is upward adjusted from D_ref to DI_3, the temperature and humidity of the air conditioning space are detected at Operation 301, and the discomfort index of the air conditioning space is calculated at Operation 302.
  • the discomfort index of the air conditioning space is calculated, it is determined at Operation 303 whether the discomfort index DI of the air conditioning space is equal to or less than the adjusted target discomfort index DI_3.
  • the compressor 20 is stopped at Operation 304, and the indoor fan 13 is driven to provide a low wind at Operation 305.
  • the reason to drive the indoor fan 13 such that the low wind is provided by the indoor fan 13 is that it is necessary to humidify the air conditioning space, such that the air conditioning space is not in an excessively dry state, although the compressor 20 is stopped, since the humidity of the air conditioning space is low.
  • the compressor 20 is driven with the beginning of an operation at Operation 400.
  • the compressor 20 includes a plurality of compressors, all the compressors are driven such that the air conditioner is operated with the maximum capacity.
  • the compressor 20 is a variable capacity compressor, the compressor is driven with the maximum power.
  • the indoor fan 13 is driven at a turbo wind mode providing the maximum amount of wind to rapidly cool the air conditioning space.
  • the temperature and humidity of the air conditioning space are detected at Operations 410 and 420, respectively, and the discomfort index of the air conditioning space is calculated at Operation 430.
  • the discomfort index of the air conditioning space is calculated by the previously-described equation [1].
  • the discomfort index of the air conditioning space After the discomfort index of the air conditioning space is calculated, it is determined at Operation 440 whether the discomfort index DI of the air conditioning space has reached a target discomfort index DI_ref. When it is determined at Operation 440 that the discomfort index DI of the air conditioning space has not reached the target discomfort index DI_ref, the procedure returns to Operation 400, and subsequent operations are performed.
  • the compressor 20 is stopped at Operation 450, and the temperature of the air conditioning space when the discomfort index DI of the air conditioning space has reached the target discomfort index DI_ref is confirmed at Operation 460.
  • the temperature of the air conditioning space is detected by the temperature detection unit 32 or confirmed through the recognition of the temperature when the discomfort index DI of the air conditioning space has reached the target discomfort index DI_ref.
  • the discomfort index is a discomfort index DI changeable in correspondence to the temperature T of the air conditioning space.
  • the storage unit 35 stores discomfort indices corresponding to temperatures of the air conditioning space.
  • the discomfort index changeable in correspondence to the temperature T of the air conditioning space means the maximum discomfort index that can be upward adjusted within a range not to affect the comfort of people considering the skin temperature of people.
  • the upward adjustable discomfort index is large at a low temperature region and small at a high temperature region.
  • the target discomfort index is adjusted from D_ref to DI' at Operation 480.
  • the temperature and humidity of the air conditioning space are detected at Operation 490, respectively, and the discomfort index of the air conditioning space is calculated at Operation 500.
  • the compressor 20 is stopped at Operation 520.
  • the compressor remains stopped until the discomfort index DI of the air conditioning space reaches the adjusted target discomfort index DI_1, thereby reducing power consumption.
  • the operation of the indoor fan 13 may be controlled.
  • the indoor fan 13 is driven based on the humidity of the air conditioning space. Specifically, when the humidity of the air conditioning space is high, the indoor fan 13 is stopped to prevent the humidification in the air conditioning space while the compressor 20 is stopped.
  • the indoor fan 13 When the humidity of the air conditioning space is low, the indoor fan 13 is driven at a low wind mode to humidify the air conditioning space while the compressor 20 is stopped.
  • the compressor 20 is driven with the beginning of an operation at Operation 600.
  • the compressor 20 includes a plurality of compressors, all the compressors are driven such that the air conditioner is operated with the maximum capacity.
  • the compressor 20 is a variable capacity compressor, the compressor is driven with the maximum power.
  • the indoor fan 13 is driven at a turbo wind mode providing the maximum amount of wind to rapidly cool the air conditioning space.
  • the temperature and humidity of the air conditioning space are detected at Operations 610 and 620, respectively, and the discomfort index of the air conditioning space is calculated at Operation 630.
  • the discomfort index of the air conditioning space is calculated by the previously-described equation [1].
  • the discomfort index of the air conditioning space After the discomfort index of the air conditioning space is calculated, it is determined at Operation 640 whether the discomfort index DI of the air conditioning space has reached a target discomfort index DI_ref. When it is determined at Operation 640 that the discomfort index DI of the air conditioning space has not reached the target discomfort index DI_ref, the procedure returns to Operation 600, and subsequent operations are performed.
  • the compressor 20 is stopped at Operation 650, and the temperature of the air conditioning space when the discomfort index DI of the air conditioning space has reached the target discomfort index DI_ref is confirmed at Operation 660.
  • the temperature of the air conditioning space is detected by the temperature detection unit 32 or confirmed through the recognition of the temperature when the discomfort index DI of the air conditioning space has reached the target discomfort index DI_ref.
  • the temperature of the air conditioning space when the discomfort index DI of the air conditioning space has reached the target discomfort index DI_ref is confirmed, it is determined at Operation 670 whether it is necessary to change the target discomfort index, which is possible through the confirmation of the temperature of the air conditioning space. For example, when the temperature of the air conditioning space is within the high temperature region, it is determined that it is not necessary to change the target discomfort index. When the temperature of the air conditioning space is within the low temperature region or the intermediate temperature region, it is determined that it is necessary to change the target discomfort index.
  • the target discomfort index to be changed When it is determined at Operation 670 that it is necessary to change the target discomfort index, the target discomfort index to be changed, corresponding to the temperature T or the temperature band of the air conditioning space, is confirmed and the target discomfort index is changed into the confirmed target discomfort index at Operation 680, and the cooling operation is controlled using the changed target discomfort index at Operation 690.
  • the target discomfort index to be changed may be set to be a fixed value according to the temperature band (see the embodiment of FIG. 7 ) or to be individual values according to the temperature (see the embodiment of FIG. 11 ).
  • the existing target discomfort index is maintained at Operation 700, and the existing cooling operation is maintained at Operation 710.
  • whether to drive the indoor fan while the compressor is stopped may be controlled according to the humidity of the air conditioning space or the temperature band at the target discomfort index, as in the previous embodiments.
  • control method of the air conditioner according to the present invention has the effect of controlling a cooling operation by adjusting a target discomfort index according to a temperature band of the air conditioning space when the discomfort index of the air conditioning space reaches the target discomfort index, thereby preventing the execution of an unnecessary cooling operation within a range not to affect the comfort of a user and thus reducing power consumption.

Claims (8)

  1. Steuerungsverfahren einer Klimaanlage, umfassend:
    Durchführen eines Klimabetriebs bis ein Diskomfort-Index (discomfort index) eines klimatisierten Raumes einen Ziel-Diskomfort-Index erreicht;
    wenn der Diskomfort-Index den Ziel-Diskomfort-Index erreicht hat, Rückmelden eines Temperaturbandes des klimatisierten Raumes; und
    Angleichen des Ziel-Diskomfort-Index entsprechend dem Temperaturband des klimatisierten Raumes, um den Klimabetrieb zu steuern.
  2. Das Steuerungsverfahren gemäß Anspruch 1, wobei das Temperaturband des klimatisierten Raumes einem Niedrigtemperaturbereich mit einem ersten Temperaturbereich, einem Zwischentemperaturbereich mit einem zweiten Temperaturbereich, oder einem Hochtemperaturbereich mit einem dritten Temperaturbereich entspricht.
  3. Das Steuerungsverfahren gemäß Anspruch 2, wobei der Ziel-Diskomfort-Index nach oben angeglichen wird innerhalb eines Bereichs, um den Komfort von Menschen im Niedrigtemperaturbereich und im Zwischentemperaturbereich nicht zu beeinträchtigen.
  4. Das Steuerungsverfahren gemäß Anspruch 3, wobei der Ziel-Diskomfort-Index im Niedrigtemperaturbereich mit einem größeren Wert nach oben angeglichen wird als im Zwischentemperaturbereich.
  5. Das Steuerungsverfahren gemäß Anspruch 1, wobei das Angleichen des Ziel-Diskomfort-Index entsprechend dem Temperaturband des klimatisierten Raumes zum Steuern des Klimabetriebs Stoppen eines Kompressors (20) und eines Innenventilators (13) umfasst, wenn das Temperaturband des klimatisierten Raumes dem Niedrigtemperaturbereich entspricht und der Diskomfort-Index des klimatisierten Raumes unterhalb des angeglichenen Ziel-Diskomfort-Index liegt.
  6. Das Steuerungsverfahren gemäß Anspruch 1, wobei das Angleichen des Ziel-Diskomfort-Index entsprechend dem Temperaturband des klimatisierten Raumes zum Steuern des Klimabetriebes Stoppen eines Kompressors (20) und Steuern eines Innenventilators (13), der entsprechend einer Feuchtigkeit des klimatisierten Raumes betrieben wird, wenn das Temperaturband des klimatisierten Raumes dem Zwischentemperaturbereich entspricht und der Diskomfort-Index des klimatisierten Raumes unterhalb des angeglichenen Ziel-Diskomfort-Index liegt.
  7. Das Steuerungsverfahren gemäß Anspruch 6, wobei der Innenventilator gestoppt wird, wenn die Feuchtigkeit des klimatisierten Raumes 50 % oder mehr zum Zeitpunkt des Stoppens des Kompressors (20) beträgt, und betrieben wird, wenn die Feuchtigkeit des klimatisierten Raumes weniger als 50 % zum Zeitpunkt des Stoppens des Kompressors (20) beträgt.
  8. Das Steuerungsverfahren gemäß Anspruch 1, wobei das Angleichen des Ziel-Diskomfort-Index entsprechend dem Temperaturband des klimatisierten Raumes zum Steuern des Klimabetriebes das Aufrechterhalten des Diskomfort-Index des klimatisierten Raumes umfasst, wenn das Temperaturband des klimatisierten Raumes dem Hochtemperaturbereich entspricht und Stoppen eines Kompressors (20) und Betreiben eines Innenventilators (13) wenn der Diskomfort-Index des klimatisierten Raumes unterhalb des Ziel-Diskomfort-Index liegt.
EP09158411.0A 2008-07-18 2009-04-22 Steuerverfahren einer Klimaanlage Not-in-force EP2146153B1 (de)

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KR102056470B1 (ko) * 2017-11-03 2019-12-17 주식회사 옴니벤트 실내 환경 제어 시스템
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EP2146153A3 (de) 2014-08-27
CN101629752B (zh) 2013-12-11
KR20100009253A (ko) 2010-01-27
KR101679840B1 (ko) 2016-11-25
CN101629752A (zh) 2010-01-20
EP2146153A2 (de) 2010-01-20

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